Seiko Cal. 6321 - 890

The Seiko 6321-890 represents an important milestone in Seiko's 1969 lineup. With its 18mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-e10b390aa40a]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1969

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